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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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T48C893 датащи(PDF) 29 Page - ATMEL Corporation |
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T48C893 датащи(HTML) 29 Page - ATMEL Corporation |
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29 / 82 page  T48C893 T48C893 Rev. A4, 22-Jan-02 29 (82) 4.3 Universal Timer/Counter / Communication Module (UTCM) The Universal Timer/counter/ Communication Module (UTCM) consists of three timers (Timer 1 ,Timer 2, Timer 3) and a Synchronous Serial Interface (SSI). D Timer 1 is an interval timer that can be used to generate periodical interrupts and as prescaler for Timer 2, Timer 3, the serial interface and the watch- dog function. D Timer 2 is an 8/12-bit timer with an external clock in- put (T2I) and an output (T2O). D Timer 3 is an 8-bit timer/counter with its own input (T3I) and output (T3O). D The SSI operates as two wire serial interface or as shift register for modulation and demodulation. The modulator and demodulator units work together with the timers and shift the data bits into or out of the shift register. There is a multitude of modes in which the timers and the serial interface can work together. Demodu– lator 3 8–bit Counter 3 Capture 3 Compare 3/1 Compare 3/2 Modu– lator 3 MUX MUX Control Watchdog Interval / Prescaler Timer 1 Timer 3 Modu– lator 2 4–bit Counter 2/1 Compare 2/1 MUX MUX DCG 8–bit Counter 2/2 Compare 2/2 Control Timer 2 MUX 8–bit Shift–Register Receive–Buffer Transmit–Buffer Control SSI SCL INT4 INT5 INT2 NRST INT3 POUT TOG2 TOG3 T1OUT SUBCL SYSCL from clock module T3O T3I 13765 T2I T2O SC SD I/O bus Figure 27. UTCM block diagram |
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